Windows 10: Can't Override .dll files on C: Drive

I was trying to override a dll file and for some reason my computer will replace the file , but when i check properties is the same old file.
Also looks that if i want to change user permissions i get an error, and also if i want to adjust the UAC i click on it and is not going anywhere.
Here is my info:






Thanks for any help.

:)

 

msvcp100.dll and msvcr100.dll in C:\

they are microsoft visual studio files, leave em alone.

 

msvcp100.dll and msvcr100.dll in C:\

Hello back TPU!

Yesterday I saw two files(msvcp100.dll and msvcr100.dll) in my C:\ disk folder. What does this mean? I know this two files should be in C:\Windows or C:\Windows\System32 or somewhere in C:\Windows but not in main disk folder. I deleted this files but files appeared again today. Is this a virus or maybe an application? How can I check this?

Tintai

 

Rundll32.dll?

Make sure to use an adminstrative command prompt.

Try this: ICACLS "c:\windows\system32\rundll32.dll" /T /grant Everyone:F or ICACLS c:\windows\system32\rundll32.dll /T /grant Everyone:F
Can't remember if it is with, or without, quotes.

But, why do all this... try FileAssassin by Malwarebytes, if you are trying to delete the files, but be careful, if you delete the Rundll32.dll files your OS may take a cr*p on you.